Yup just like Michael said, the clip or nut came loose. Mercedes addressed this because they said if the clip or nut was broken then it was covered under warranty. It unfortunately was not broken, so they added a touch of "glue" or something. It's been okay for several years now.
However I do have a new mystery sound which sounds like it's coming from behind the passenger airbag????
It sounds like something very small because it reverberates / oscillates at a very high rate. I hope it's not the connection for the airbag!
[This message has been edited by Blue Devil (edited 10-18-2000).]